ICD-10-CM 2027
ICD-10 code for Prader-Willi syndrome
From the official ICD-10-CM alphabetic index entry “Prader-Willi syndrome”. Page updated September 29, 2026.
About coding Prader-Willi syndrome
The ICD-10-CM code for Prader-Willi syndrome is Q87.11 (Prader-Willi syndrome).
Within Q87.1 (congenital malformation syndromes predominantly associated with short stature), Q87.11 is specifically for Prader-Willi syndrome. Related codes cover other congenital malformation syndromes predominantly associated with short stature (Q87.19).
Use an additional code(s) to identify all associated manifestations.
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about Prader-Willi syndrome ICD-10 codes
What is the ICD-10 code for Prader-Willi syndrome?
- Q87.11 — Prader-Willi syndrome.
Is Q87.11 billable?
- Yes. Q87.11 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q87.11 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q87.11 as a principal diagnosis.
Is Q87.11 a CC or MCC?
- Q87.11 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.